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Connecting the Latest Ethernet Technologies to Legacy PLC-5 & SLC 5/04’s on AB’s DH+

Numerous processing plant clients are searching for an answer for interface their more seasoned AB PLC5s and SLC 5/04s on AB DH+ to speak with more current Ethernet AB PLCs like the SLC 5/05 and PLC5s and perform RSLINX/LOGIX PLC programming by means of Ethernet.

Which PLC5 do you have?

Picking your answer will rely upon whether you have a more seasoned unique PLC5 or the cutting edge PLC5s according to beneath:

The first AB PLC5/10, 5/12, 5/15, and 5/25 have 2 communications ports which incorporate Allen-Bradley Data Highway Plus DH+ or AB Remote (RIO).

The up and coming age of the PLC-5 processors incorporate 5/11, 5/20, 5/30, 5/40, 5/60, 5/80 which have DH+ and Remote I/O ports, and a 25 pin RS232 communication with DF1 convention with the choice of requesting with an Ethernet or ControlNet port.

What are my Ethernet to DH+ choices?

On the off chance that you are needing to keep your current DH+ PLCs5 and SLC 5/04s in your present establishment and need to interface more up to date Ethernet gadgets, here are two alternatives:

ANC-120e Product Review from  http://theautomationblog.com/usb-to-data-highway-plus-using-the-anc-120e-a-lower-cost-alternative-to-the-1784-u2dhp/

ANC-100e: Ethernet/IP to DH+ Converter

anc 100e 180x180 - Options for interfacing Older DH+ PLC5s and SLC 5/04s to Ethernet/IPANC-100e, RSLINX Ethernet/IP to Allen-Bradley Data Highway Plus (DH+) Gateway Converter Series. $1,195 USD List. The ANC-100e is an affordable and superior, “pocket-sized” converter interfacing Factory Automation Devices between Ethernet/IP and PLC5s and SLC-504s on Allen-Bradley Data Highway Plus DH+.

ANC-120e: USB to DH+ RSlinx PLC

ANC120e 300x115 - Options for interfacing Older DH+ PLC5s and SLC 5/04s to Ethernet/IPANC-120e, USB to AB Data Highway Plus RSLINX PLC Programming Cable, option to the 1784-U2DHP. $995 USD List. This high performance cable utilizes the AB Controllogix Ethernet Driver for fast communication access to PLC5 and SLC 5/04s

AB Controllogix Gateway 1756-DHRIO Processor}

AB Controllogix Gateway 1756-DHRIO Processor 

Controllogix 1756 DH+ to Ethernet Gateway that is utilized to connect from Ethernet to 2 DH+ networks at speeds of 57.6Kb, 115.2Kb and 230.4Kb.

The benefits of the 1756 is that it enables one Ethernet Gateway to numerous networks including ControlNet, Devicenet, DH+, DH-485. It has direct access to PLC-5 Data Tables with no programming required to connect from Ethernet to DH+

Tragically, this is a costly single answer for your PLC5 on DH+:

1756 Package:



1756-PA75: 85-265V AC POWER SUPPLY


Prosoft A X2-AB-DHRIO

EtherNet/IP Converter to Allen Bradley Remote I/O or DH+ Gateway

EtherNet/IP Converter to Allen Bradley Remote I/O or DH+ Gateway

Prosoft’s A X2-AB-DHRIO is an EtherNet/IP to Remote I/O or DH+ converter that is intended to enable customers to start a phased migration way to deal with replacing or redesigning legacy Remote I/O, HMI’s or Drives. It is an adaptable gateway that works with most Ethernet hardware permitting messaging between RSLINX/LOGIX to DH+ or communications between more up to date AB Ethernet PLCs to more established PLC5s and SLC 5/04s on DH+

AB 1761-Net-ENI DF1 to Ethernet/IP converter

(note just accessible with most recent PLC5 Processors)

AB 1761-Net-ENI DF1 to Ethernet/IP converter

This arrangement will permit your RS232, DF1 CH0 serial port on your PLC5 communication path to AB Ethernet/IP.

The advantages of this arrangement is that it is the most economical alternative and have direct access to the PLC5 Data Table with inherent email capacities and ENI configuration done with a free utility.

Limitations include permitting just 3 of the same bi-directional connections to the PLC5 at any given time. The PLC5 serial port just has serial communication speeds of 19.2Kb.

ANC-100e Ethernet IP to AB's DH+ Converter

The Automation Networks ANC-100e communicates with all SCADA, HMI, PLC programming with direct Ethernet/IP access to the DH+ network and stations. 

ANC-100e has similar replacement features as the Controllogix 1756-DHRIO / 1756-ENBT, and AB 1784 Interface Cards: 1784-U2DHP, 1784-KTx, 1784-PKTx, 1784-PCMK and Prosoft AN-X2-DHRIO Converters.

$1,295 USD List. Apr 1, 2024

Overnight Shipping Available

ANC-120e USB to AB's DH+

The ANC-120e is an economical and high performance USB-to-Allen-Bradley Data Highway Plus converter interfacing major HMI, SCADA, PLC Programming packages to Devices on DH+. Its features significantly outperform AB’s 1784-U2DHP PLC Programming Cable operating at 12 Mg USB speed with the Controllogix Ethernet/IP Driver.

The ANC-120e works with all SCADA, MMI, PLC programming packages installed on your PC with USB direct access to the DH+ network and stations. These packages include RSLINX/LOGIX Classic & Enterprise with RSLOGIX 5/500, Wonderware DAServer & TCP/IO Server, Citect, and Kepware using Controllogix Ethernet/IP Drivers. 

$995 USD List. Apr 1, 2024

Overnight Shipping Available

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